<template>
  <div>
<!--    面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
<!--    卡片视图区域-->
    <el-card>
<!--      搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserlist">
            <el-button slot="append" icon="el-icon-search" @click="getUserlist"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
<!--      用户列表区域-->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
<!--            修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
<!--            删除按钮-->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
<!--            分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
<!--      分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
<!--    添加用户的对话框-->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed">
<!--      内容主题区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
<!--      底部区域-->
      <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
<!--    修改用户对话框-->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
<!--    分配角色的对话框-->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data(){
    // 验证邮箱规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)){
        return cb()
      }
      cb(new Error("请输入合法的邮箱"))
    }
    // 验证手机号规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)){
        return cb()
      }
      cb(new Error("请输入合法的手机号"))
    }
    return{
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户的对话框是否显示
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则
      addFormRules: {
        username:[
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password:[
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email:[
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile:[
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制修改用户对话框是否展示
      editDialogVisible: false,
      editForm:{},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制分配角色对话框是否显示
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的列表
      roleList: [],
      // 已选中的角色id值
      selectedRoleId:''
    }
  },
  created() {
    this.getUserlist()
  },
  methods:{
    // 获取用户
    async getUserlist(){
      const {data: res} = await this.$http.get('/users', {params: this.queryInfo})
      if (res.meta.status !== 200){
        return this.$message.error("获取用户列表失败！")
      }
      console.log(res)
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pageSize改变的事件
    handleSizeChange(newSize){
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserlist()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage){
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserlist()
    },
    // 监听switch开关的状态
    async userStateChange(userinfo){
      console.log(userinfo)
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200){
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error("更新用户状态失败！")
      }
      this.$message.success("更新用户状态成功！")
    },
    // 监听添加用户对话框关闭的事件
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加用户
    addUser(){
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的请求
        const {data: res} = await this.$http.post("/users", this.addForm)
         if (res.meta.status !== 201){
           this.$message.error("添加用户失败！")
         }
        this.$message.success("添加用户成功！")
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表
        await this.getUserlist()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id){
      const {data: res} = await this.$http.get("/users/" + id)
      if (res.meta.status !== 200){
        return this.$message.error("查询用户信息失败！")
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo(){
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) return
        // 发起修改用户信息的数据请求
        const {data: res} = await this.$http.put("/users/" + this.editForm.id, {email: this.editForm.email, mobile: this.editForm.mobile})
        if (res.meta.status !== 200){
          return this.$message.error("更新用户信息失败！")
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        await this.getUserlist()
        // 提示修改成功
        this.$message.success("更新用户信息成功！")
      })
    },
    // 根据id删除对应用户
    async removeUserById(id){
      // 弹框询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回值为字符串confirm
      // 如果用户取消了删除，则返回值为字符串cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm'){
        return this.$message.info("已取消删除")
      }
      // console.log(id)
      const {data: res} = await this.$http.delete("/users/" + id)
      if (res.meta.status !== 200){
        return this.$message.error("用户删除失败！")
      }

      this.$message.success("用户删除成功！")
      // 刷新用户列表
      await this.getUserlist()

    },
    // 展示分配角色的对话框
    async setRole(userInfo){
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有的角色列表
      const {data: res} = await this.$http.get("/roles")
      if (res.meta.status !== 200){
        return this.$message.error("获取角色列表失败！")
      }
      this.roleList = res.data

      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo(){
      if (!this.selectedRoleId){
        return this.$message.error("请选择要分配的角色！")
      }
      const {data: res} = await this.$http.put("/users/" + this.userInfo.id + "/role", {rid: this.selectedRoleId})
      if (res.meta.status !== 200){
        return this.$message.error("更新角色失败！")
      }
      this.$message.success("更新角色成功！")

      await this.getUserlist()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style scoped>

</style>
